Frameless Safety Eyewear With Elastomer Hinge and Anti-Fog Lens
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Solution Overview
Problem
Existing eyewear technologies are inadequate in providing durable, lightweight, and fog-resistant protection against various hazards, including radiation and chemical splashes, with a focus on improving wearability and structural integrity.
Innovation Solution
The eyewear is designed with a frameless single lens structure, incorporating optical polymer and elastomer materials, and is manufactured through a two-shot molding process at specific temperature ranges to ensure durability and flexibility, featuring anti-fog coatings and a hinge mechanism for easy folding/unfolding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional eyewear materials and structures are used, then structural integrity is maintained, but weight and durability are compromised
Solution Approach 1:
The patent employs composite materials consisting of an optical polymer material (such as polycarbonate, polystyrene, or polymethyl methacrylate) combined with an elastomer material. This composite structure provides both the structural integrity needed for safety eyewear and the lightweight properties for comfort during extended wear.
Solution Approach 2:
The patent utilizes two-shot molding process with specific temperature parameters (optical polymer injected at 250-270°C, elastomer injected at 220-260°C, mold temperature maintained at 50-70°C) to optimize the physical and mechanical properties of the composite material, achieving both strength and weight reduction.
2Reliability
If durable materials are used for safety protection, then protection against hazards is improved, but fog resistance and wearability are compromised
Solution Approach 1:
The patent applies anti-fog coating specifically on the inner surface of the lens portion, providing localized fog resistance where it is most needed while maintaining the overall durability and protective properties of the eyewear structure.
Solution Approach 2:
The combination of optical polymer material and elastomer creates a composite structure where the optical polymer provides hazard protection and the elastomer layer contributes to fog resistance, allowing both protection and comfort to be achieved simultaneously.
3Strength
If rigid structure is used for protection, then durability is improved, but flexibility and ease of operation are compromised
Solution Approach 1:
The patent incorporates a hinge portion made of elastomer material that enables dynamic movement between the front portion and temple portion. This allows the eyewear to transition between folded and unfolded states easily while maintaining structural integrity when worn.
Solution Approach 2:
The use of elastomer material with specific thermal and mechanical properties, processed at controlled temperatures (220-260°C injection, 50-70°C mold temperature), provides the right balance of rigidity for protection and flexibility for folding operations.
4Adaptability or versatility
If complex multi-component structure is used, then functionality is improved, but manufacturing complexity is compromised
Solution Approach 1:
The patent combines multiple functional components (lens, frame, hinge, and anti-fog coating) into a single integrated structure manufactured through a two-shot molding process. This merging of components achieves high functionality while streamlining manufacturing compared to assembling separate parts.
Solution Approach 2:
The two-shot molding process creates a composite structure where the first shot forms the optical polymer portion and the second shot forms the elastomer portion, integrating multiple materials and functions in a single manufacturing operation rather than requiring separate assembly steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides enhanced protection, lightweight comfort, and improved wearability by ensuring robustness and fog resistance, while maintaining ease of use through a flexible hinge design.
Implementation Method 1
The optical polymer material is injected during the two shot moulding process at a predefined temperature. Further, the predefined temperature ranges between 250-270 degree Celsius.
Implementation Method 2
The optical polymer material is moulded during the two shot moulding process at a mold predefined temperature, wherein the mold predefined temperature ranges between 50-70 degree Celsius.
Implementation Method 3
The elastomer is injected during the two shot moulding process at a predefined temperature. Further, the predefined temperature ranges between 220-260 degree Celsius.
Implementation Method 4
The elastomer is moulded during the two shot moulding process at a mold predefined temperature, wherein the mold predefined temperature ranges between 20-50 degree Celsius.
Implementation Method 5
the frameless single lens structure is coated with an anti-fog material
Data Source
AI summary
An eyewear is disclosed. The eyewear comprising a front portion, a temple portion, and a hinge portion provided between and connecting with the front portion and the temple portion. Further, the front portion and the temple portion comprise an optical polymer material and the hinge portion comprises an elastomer.